There are public IP when , Through the route mapping to realize the external network access to the internal network . however , When there is no public network IP when , How to access intranet application from Internet ?

The hardware routing method is not feasible because there is no public network , Ability to use software port Mapping method . Such as open NAT123 whole port mapping .

whole port The principle of mapping is to use intranet software to bind domain names server, Access to the Internet through the domain name . There is no need to change access in this way port, But it needs to be during the visit , Enable point-to-point access at the same time .

Implementation process :

1, Intranet uses open NAT123port mapping .

2, Add mapping . Choose all port mapping .

3, Internet addresses can use their own domain names , You can also use the prompt secondary domain name directly .



4, After the map is saved successfully , No more routing .

5, When the external network accesses the internal network application , Enable visitors at the same time on the access side , Join the visit port, You can access all the applications in the intranet , No need to change access port.

There is no public network to access intranet application IP、 many port、 Fix port、UDP And so on

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